Cite

Missionary standing by indigenous men with microscopes, Cameroon, ca. 1920-1940

MLA

Missionary Standing by Indigenous Men with Microscopes, Cameroon, Ca. 1920-1940. 1920. https://collections.library.yale.edu/catalog/11444882.

APA, 6th edition

Missionary standing by indigenous men with microscopes, Cameroon, ca. 1920-1940. (1920). [General views (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11444882.